结构工程师2018，Vol.34Issue(z1)：48-53,6.
远近场地震动反应谱峰值参数比较及其对多层地铁车站的影响
Difference of Response Spectrum Based Intensity Parameters of Far-field and Near-field Earthquakes and its Influence on Multi-story Subway Station
摘要
Abstract
For the study of the difference of response spectrum based inte intensity parameters of different near-field and far-field ground motion on multi-story subway station,a total of 20 ground motion records including far-field ground motion and near-fault ground motion with three different types:forward directivity,fling-step,non-pulse were selected.All seismic waves were normalized with the intesity index:peak ground acceleration.Response spectrum based effective peak acceleration (EPA),effective peak velocity (EPV),improved effective peak acceleration (IEPA),and improved effective peakvelocity (IEPV) were selected as intensity parameters for comparison.The finite elemnt method was used to realize time history analysis of elastoplastic seismic response of multi-story subway station.The result showed that,both forward directivity and flingstep ground motions have high values of EPV and IEPV.Ground motion with fling step effecttend tocause larger deformation of the structure and bending moment of columns in B4 story;the response of structureunder farfield ground motions tend to be small relatively;near-field records without pulse causes much more slight dynamic responses.The response of structure increases with the improve of EPV and IEPV.关键词
前方向性/滑冲效应/多层地铁车站/反应谱峰值参数Key words
forward directivity effect/fling-step effect/ multi-story subway station/response spectral intensity parameter引用本文复制引用
陈之毅,熊求正..远近场地震动反应谱峰值参数比较及其对多层地铁车站的影响[J].结构工程师,2018,34(z1):48-53,6.基金项目
国家自然科学基金(51778464) （51778464）
